Spring mvc-文件上传与JSON-学习笔记

<form action="${pageContext.request.contextPath}/file/upload2.action" method="post" enctype="multipart/form-data">
      选择文件: <input type="file" name="images" /> <br/>
      选择文件: <input type="file" name="images" /> <br/>
      选择文件: <input type="file" name="images" /> <br/>
      <input type="submit" value="上传"/> <br/>
    </form>

@RequestMapping("/upload2")
    public String upload2(List<MultipartFile> images) throws Exception {
        for (MultipartFile image : images) {
            System.out.println("上传文件名：" + image.getOriginalFilename());
            System.out.println("上传文件流：" + image.getInputStream());
            File file = new File("D:\\xml", image.getOriginalFilename());
            FileUtils.copyInputStreamToFile(image.getInputStream(), file );
        }
        return "book";
    }

{
    "k":"v",
    "k2":"v2",....
}

[
  元素,元素2,....
]

package com.czxy.mvcanno.domain;
import org.springframework.format.annotation.DateTimeFormat;
import java.util.Date;
import java.util.List;
/**
 * @author 桐叔
 * @email liangtong@itcast.cn
 */
public class User {
    private Integer id;
    private String username;
    private String password;
    public User() {
    }
    public User(Integer id, String username, String password) {
        this.id = id;
        this.username = username;
        this.password = password;
    }
    // getter和setter
}

package com.czxy.mvcanno.controller;
import com.czxy.mvcanno.domain.User;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
/**
 * @author 桐叔
 * @email liangtong@itcast.cn
 */
@Controller
@RequestMapping("/json")
public class JsonController {
    @RequestMapping("/list")
    public void list(@RequestBody User user) {
        System.out.println(user);
    }
}

package com.czxy.mvcanno.controller;
import com.czxy.mvcanno.domain.User;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import java.util.ArrayList;
import java.util.List;
/**
 * @author 桐叔
 * @email liangtong@itcast.cn
 */
@Controller
@RequestMapping("/json")
public class JsonController {
    @RequestMapping("/list")
    @ResponseBody
    public List<User> list(@RequestBody User user) {
        System.out.println(user);
        //响应数据
        List<User> list = new ArrayList<>();
        list.add(new User(1,"jack","1234"));
        list.add(new User(2,"rose","6666"));
        list.add(new User(3,"tom","loverose"));
        return list;
    }
}

public class User {
    @JsonIgnore
    private List<String> hobby;

public class User {
    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss",timezone = "GMT+8")
    private Date birthday;